The so-called no perfect technology, vacuum freeze drying technology of the main disadvantages of high cost.

正所谓没有完美的技术，真空冷冻干燥技术的主要缺点是成本高。

youdao

The so-called no perfect technology, vacuum freeze drying technology of the main disadvantages of high cost.

正所谓没有完美的技术，真空冷冻干燥技术的主要缺点是成本高。

youdao